11543049525 has 48 divisors (see below), whose sum is σ = 21834031104. Its totient is φ = 5271218880.

The previous prime is 11543049523. The next prime is 11543049541. The reversal of 11543049525 is 52594034511.

It is a happy number.

It is not a de Polignac number, because 11543049525 - 2¹ = 11543049523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543049523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 504892 + ... + 527258.

It is an arithmetic number, because the mean of its divisors is an integer number (454875648).

Almost surely, 2^11543049525 is an apocalyptic number.

11543049525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11543049525 is a deficient number, since it is larger than the sum of its proper divisors (10290981579).

11543049525 is a wasteful number, since it uses less digits than its factorization.

11543049525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23370 (or 23365 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 11543049525 in words is "eleven billion, five hundred forty-three million, forty-nine thousand, five hundred twenty-five".